Automatic painting-machine



C. A. PETERSON AND C. SWANSON.

AUTOMATIC PAINTING MACHINE.

APPLICATION FILED DEC.2I. I9IB.

Patented Feb. 3,1920.

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Mommas C. A. PETERSON AND C. SWANSON.

AUTOMATIC PAINTING MACHINE, APPLICATION FILED DEILZI. 191B.

1 3 30,00 1 Patented Feb. 3, 1920.

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c. A. PETERSONAND c. SWANSON.

AUTOMATIC PAINTING MACHINE,

APPLICATION FILED 050.21.1218

1,330,001. Patented Feb. 3,1920.

3 SHEETS-SHEET 3.

Q anvewtow UNITED STATES PATENT OFFICE.

CARL A. PETERSON AND CHARLES SWAN SON, OF PORTLAND, OREGON.

Specification of Letters Patent.

. Application filed December 21, 1918. Serial No. 267,743.

To all whom it may concern:

Be it known that we, CARL A. PETERSON, a citizen of the United States of America, and CHARLES SWANSON, a citizen of Sweden, each new residing at Portland, in the county of Multnomah and State of Oregon, have invented new and useful Improvements in Automatic Painting-Machines, of which the following is a specification.

The purpose ,of the invention is to provide a machine in which a quantity of paint may be carried and automatically withdrawn therefrom and applied to a wall or other surface to be painted. To this end the invention comprises a paint reservoir in conjunction with whichthere is a pump, a motor for operatin the pump, an oscillatory fountain brush a so operated by the motor, and connections between the reservoir, the pump and the brush whereby, as thebrush is oscillated, the paint is Withdrawn from the reservoir and forced through the brush, the latter applying it to the surface to be painted as it, the brush, is oscillated. A stop valve is provided also on the bottom and top of the reservoir, so that either intake to the pump one of which is adjacent the top and the other adjacent the bottom may be closed or opened, this arrangement providing for the pump intaking from the bottom of the reservoir whether the device be held in an upright position or inverted. Supplemental to the main purpose above mentioned, the invention seeks further to provide a device of this character which is simple in construction, durable and efl'ective in operation, and inexpensive to manufac-' ture. I 1 Other and'further purposes appear in the following (description wherein the invention is set forth in detail. i

For the purpose of illustration, a specific embodiment of the invention is adhered to but to such embodiment the invention is not to be restricted. Actual practical use may' suggest certain desirable, changes or alterations and the right is claimed to make any whichdo not deviate subjoined claims.

The same numerals of reference designate the same parts throughout the several figures from the scope of the pf the drawings, wherein: Figure 1 is a view in side elevation of the improved machine. 55.

Fig. 2 'i's a top plan viewof the saine.

Fig. 3 is a section on the line 33 of Fig. 2.

Fig. 4 is a section on the line 44 of Fig. 2.

Fig. 5 is a section on the line 5-5 of Fig. 1. i

Fig. 6 is a section on the line 6--6 of Fig. 3.

sshown, the invention comprises a main casing which is divided into a paint reservoir 1 and a gear case 2. The latter is made relatively shallow as compared with the former and is closed on top by a removable cover 3 through which there are passed cap screws 4 securing the cover to the gear case 2.

Formed integral with the cover 3 there is a column 5 the upper end of which is formed integral with the lower end casing 6 of a motor 7 this lower end casing 6 housing the gear 8 which is mounted on the motor shaft and which meshes with a pinion 9 also housed in the end casing 6 but-mounted on the upper end of a shaft 10, the latter passing through the cover 3 and carrying at its lower end a pinion 11.

Set in the column 5 but projecting into the. gear case 2 there is a stud 12 on which there are mounted for angular movement thereon the pinion 13 and ear 14, this gear and pinion being suita 1y interconnected by a common bushing or other means so that there may be no relative angular movement between them. A nut 15 is threaded onto the lower end of the stud 12 and servesv to retain thereon the gear and pinion 14 and 13, the gear 14 meshing with a pinion 11 carried on the shaft 10.

7 There is also formed integral with the cover 3 a column 16, the top of which is formed integral with a shelf or platform 20 which in turn is formed integral with the Patented Feb. 3, 1920. i

end casing 5. The column 16 is bored and i this extending end thecrank 21 in which there isfixed a wrist pin 22, the purpose of which is to provide means .to permit the crank to reciprocate the pump and to osclllate the brush both of which are hereinafter described in detail.

The paint reservoir 1 is formed in its bottom with ahollow'outwardly disposed projection 23 through the center of which there is passed a bushing 24 extending both inwardly and outwardly with reference to the projection. This bushing is formed with an annular flange 25 which is externally threaded on its outwardly projecting end to receive thereon the nut 26 which, in conjunction withthe flange 25 serves to secure the bushing 24 in place. The bushing 24 is internally threaded for the reception of the threaded valve stem 27, the latter interior to the projection 23 terminating in a disk valve 28 which, may be seated either against the interior end of the bushing 24 or against the lower end of an intake pipe 29.

The projection 23 is preferably round in shape and in its side wall there is formed an opening serving as an air vent, this 'air vent being closed by a threaded or otherwise removable plug 30. The valve 28 is designed to be operated by means of angular movement imparted to its stem 27 and to that end the exterior end of the latter is formed with a hexagonal socket 31 for engagement by a suitable wrench.

The paint reservoir 1 is closed at the top by a removable cover 32, cap screws 33 being employed to secure the cover in place with a suitable gasket interposed between it and the paint reservoir. This cover 32 is formed with a hollow projection 34 identical with the projection 23, this projection 34 carrying a valve equipment identical with that carried by the projection 23 and mounted for cooperative action with the intake pipe 25. That the reservoir may be conveniently filled, the cover is provided with a filling opening closed by a removable cap 36.

Interior to the reservoir 1 there is carried a pump cylinder 37, this latter beingpipes being in alinement. with each other but being right angularly disposed with reference to the nipple 39. Check valves 41 and 42 are connected in with the pipes 35 and 29 respectively so that they may open when pressure occurs in the said pipes from their open ends in the direction of the cross-T.

To the remaining leg of the cross-T there is connected a nipple 43 which in turn connects with an elbow 44, the latter connectin with a pipe 45 which carries a check va ve 46, this check valve opening only when pressure occurs in the pipe 45 from the cross-T to the elbow 47 with which the pipe 45 connects. Connected with the elbow 47 there is a pipe 48 which passes through that wall of the reservoir 1 facing the motor 7. A suitable jam nut and washer 49 provides against air leakage orpaint leakage around this point. Exterior to the reservoir 1, the pipe 48 suitably connects with a tubular member 50 which, depending, runs parallel with the walls of the reservoir and terminates in an airtight and moisture-tight swivel joint 51 by means of which it is connected to a hollow member 52 formed in tegral with a hollow block 53. This hollow member 52 is formed with a crank 54 having a wrist pin 55 with which one end of a link 56 pivotally connects, the remaining end of the said link pivotally connecting with the wrist pin 22.

Projecting laterally from the hollow block providing means to convey paint to the ,7

bristles when the latter is forced through the tubular member 57 as it is in the operation of the machine. 1

Movable in the cylinder 37, there is a plunger or piston 63 with which there is pivotally connected one end of a piston or plunger rod 64, the remaining end of the latter pivotally connecting with the wrist pin 22 and lying beneath that end of the link 56 which also connects with the said wrist pin.

The table 20 is extended to provide a thrust bearing for the hollow block 53 and beneath this extension of the table, there is formed a depending projection 64 which is bored to provide a bearing for a stud 65 formed with a hollow block 53. i

In the operation of the machine, it is obvious that the turning of the shaft 10 when the motor is started will result in a rotary motion being imparted to the shaft 17, whereupon the crank will be rotated and the pump thereby reciprocated, the hollow block at the same time being also rocked through the instrumentality of the link 56. This rocking of the block thus causes an oscillation of the brush 61. If the reservoir 1 befilled with paint and the machine be standing as illustrated in Fig. 1 and the valve 28. be in the position where the lower end of the plpe 29 is left open-that is, when the valve 28 is seated on the end of the bushing 24,the reciprocation of the pump plunger will, if the air inlet in the cover 32 is opened by the removal of the plug 30, cause paint to 'be drawn in through the pipe 29 into the pump and ejected therefrom through the pipes 45, 48 and 50 into the hollow block 53 from which it is driven through the tubular member 57 and tubes 62 into the bristles of the brush which, by the oscillatory movement of the brush, apply it to the surface to be painted.

,If now it be necessary to invert the device to more conveniently bring the brush into play against the surface to be painted, the valve 28 in the projection 23 is made to close the lower end of thepipe 29, the plug 30 in the said projection 23 being thereupon removed and replaced in the air inlet of the projection 34, the valve 28 in this latter projection at the same time being unseated from the end of the pipe 35. In such position of these various parts, with the device in inverted position, the pump will take paint in through the pipe but eject it through the pipes 45 and 48 to the brush in the manner and for the useful purpose before specified.

The invention having been described, what is claimed as new and useful is:

1. In a machine of the character described, a paint reservoir, an oscillatory fountain brush, and means whereby paint is withdrawn from the reservoir and transferred to the brush only when the brush is in motion.

2. In a machine of the character described, a'paint reservoir, a fountain brush, means whereby paint may be withdrawn from the reservo1r and transferred to the brush, and means for oscillating the brush so that ,tho

, paint is received thereby only when the brush is in motion.

3. In a machineof the character described, a paint reservoir, an oscillatory fountain brush, means for withdrawing the paint from the reservoir and transferring it to the brush, and common means for oscillating the brush and operating the first said means.

4. In a m'achineef thercharacter described, a paint reservoir, an oscillatory fountain brush, a pump, connections between the pump and the reservoir and the pump and the brush, and means for operating the pump to cause it to take paint-from the reservoir and to'transfer the same to the brush.

5. In a machine of the character described, a paint reservoir, an oscillatory fountain brush, a pump, connections between the pump and the reservoir and the pump and the brush, and common means for oscillating the brush and for operating the pump to cause it totake paint from the reservoir'and transfer the same to the brush.

6. In a machine of the character described, a paint reservoir, an oscillatory fountain brush, a pump, connections between the pump and the reservoir and the pump and the brush, intake pipes interior to the reservoir and operatively connected with the pump, the said pipes being so disposed that the pump may take in paint from the bottom of the reservoir irrespective of. whether the latter is in upright positionor inverted, and means for operating the pump to cause it to withdraw paint from the reservoir and to transmit the same to the brush.

7. In a machine of the character described, a paint reservoir, an oscillatory fountain brush, a pump, connections between the pump and the reservoir and the pump and the brush, intake pipes interior to the reservoir and operatively connected with the pump, the said pipes being so disposed that the pump may take in paint from the bottom of the reservoir irrespective of whether thelatter is in upright position or inverted, valves positioned at the top and bottom of thetank respectively for closing said pipes whereby the one pipe may be closed when the other is open, and means for operating the pump to cause it to withdraw paint from the tank and transfer the same to the brush.

. 8.- In a machine of the character described, a reservoir, a fountain brush, means for mounting the brush so that the latter may be oscillated, connections between the pump and the brush, so that paint may be transferred from the reservo1r to the brush, and common means for operating the pump and oscillating the brush.

9. In a machine of the character described, a reservoir, a pump, connections between the pump and the reservoir, a fountain brush, means for mounting the brush so that 1t may be oscillated, connections between the pump and the brush whereby paint may be transferred from the reservoir to' the pump and from the pump to the brush, and means for operating the pump.

10. In a machine of the character described, a reservoir, a pump, connectlons between the pump and the reservoir, a fountain brush, means for mountmg the brush so that it may be oscillated, connections between the pump and the brush whereby paint may be transferred from the reservoir to the pump and from the pump to the brush, and common means for mechanically operative connectionsbetween the fountain brush and the reservoir, a pump disposed in the reservoir, operative connections between the pump and the brush and between the pump-and the contents of the reservoir, and a driving motor operatively connected with the pump and with the brush, whereby the contents of the reservoir is transferred to the brush and the brush at the same time oscillated.

1:3. 111 a machine of the character described, a casing Which is divided into a paint reservoir and a gear casing, a removable cover attached to the gear casing, a driving motor supported by the main casing above the removable cover, a fountain brush, means for mounting the fountain brush on the main casing so that it may be oscillated, operative connections between the fountain brush and the reservoir, a pump. disposed in the reservoir and having operative connections with the contents thereof and likewise being operatively connected with the brush, a vertically disposed shaft having a crank at one end, a gear train connecting the motor with this shaft, the said gear train being positioned in the gear casing, and operative connections between the crank of said shaft and the brush and between the crank and the pump for the purpose specified.

- In testimony whereof they aflix their signatures.

CARL A. PETERSON. CHARLES SWANSON. 

